Chronic motor tic disorder is a condition that involves brief, uncontrollable, spasm-like movements or vocal outbursts otherwise called phonic tics , but not both. If both a physical tic and vocal outburst are present, the condition is known as Tourette syndrome. Chronic motor tic disorder is more common than Tourette syndrome, but less common than transient tic disorder. This is a temporary and self-limited condition expressed by tics. Another type is dystonic tics, which appear as abrupt bursts of movements followed by a sustained contraction. Chronic motor tic disorder begins before the age of 18, and typically resolves within four to six years.
The Management of Tics
Tic - Wikipedia
A tic is a sudden, repetitive, nonrhythmic motor movement or vocalization involving discrete muscle groups. Common motor and phonic tics are, respectively, eye blinking and throat clearing. Tics must be distinguished from movements of other movement disorders such as chorea , dystonia , myoclonus ; movements exhibited in stereotypic movement disorder or some autistic people, and the compulsions of obsessive—compulsive disorder OCD and seizure activity. Phonic tics are involuntary sounds produced by moving air through the nose, mouth, or throat. They may be alternately referred to as verbal tics or vocal tics , but most diagnosticians prefer the term phonic tics to reflect the notion that the vocal cords are not involved in all tics that produce sound.
Facial Tic Disorder
A tic is a stereotyped repetitive involuntary movement or sound, frequently preceded by premonitory sensations or urges. Most tic disorders are genetic or idiopathic in nature, possibly due to a developmental failure of inhibitory function within frontal-subcortical circuits modulating volitional movements. Currently available oral medications can reduce the severity of tics, but rarely eliminate them.